Tried to open the gadgets by all means, but it never showed up. Anyone sharing the same problem?
Put UAC (User Access Control) back to default level, reboot, then they should work. UAC is found in the USER control panel.
"The Windows 7 Sidebar and Gadgets do not work correctly if a user disables the User Account Control in Windows 7. There is however an easy way to make the gadgets and sidebar work again without having to replace system files (that was the way suggested in many forums). All that needs to be done is to change one value of a parameter in the Windows 7 Registry to make the sidebar and gadgets work even with UAC disabled. Open the Windows 7 Registry by pressing [Windows R], typing [regedit] and hitting [enter]. Now navigate to the Registry key HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\Curr entVersion\Sidebar\Setting and change the value of AllowElevatedProcess to 1. Restart the computer or logout and login again to see if the changes work as intended. The Registry setting ensures that the gadgets and the sidebar are working in Windows 7 properly even if UAC is disabled."